RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network built on GNU Privacy Guard (GPG). Developed by DrBob
License: Open Source
RetroShare is focused on privacy and decentralized communication with strong encryption, making it suitable for users concerned about security. Halite, on the other hand, is designed to be lightweight and user-friendly, making it ideal for users who need fast and efficient file sharing.